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Vist our Online StoreI have three pairs of the 1989 version CRS+ and they all only have 4 screws holding the passive. I assumed that Polk didn't find any advantage to using 8 screws for the 10" passive. There is a metal mesh screen the goes over the passive, so that might also be a contributing factor for fewer screws.
"Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
__________________
"Knowledge, without understanding, is a path to failure."~DK
The CRS's will be a nightmare with trying to attach the grills on straight and correctly. Might be easiest to run the CRS's with the metal grills off. Majority of the screws are put in at a angle.
I think 4 screws holding down the 10" passive will be easiest.
Larry, no rush at all! Take your time!
The nirvana inducer-
APC H10 Power Conditioner
Denon DVD-2910 universal player
DPA The Little Bit Three DAC
Yamaha P-300 turntable/TCC TC-750 phono preamp
Acurus L10 preamp
Adcom GFA-545 power amp
PolkAudio SDA 2A's/PolkAudio Monitor 7A's
Audioquest Type 4 speaker cables
Audioquest Sidewinder IC's
Audioquest Black Mamba IC's
Signal Cable Analog II IC's
I drilled out the extra 4 screw holes for the PR's on my CRS+'s....no biggie. Make them with 8, please.
'Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
Larry take your time no big rush. Are you planning on doing an 8" for the PR's in a Monitor 5? I just Mortited mine so I'd prefer not pull it to make a template, but if you need one I can probably do it. I need specific instructions as to what measurements you would need.
H9
"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass
Pass Aleph 30; Adcom GFP750/Dared SL2000A; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!
"Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
__________________
"Knowledge, without understanding, is a path to failure."~DK
Are the 10" passives of the CRS's the same size as the 10" passives of my Monitor 7A's?
If so, I might go ahead and order a set for my 7A's now.
The nirvana inducer-
APC H10 Power Conditioner
Denon DVD-2910 universal player
DPA The Little Bit Three DAC
Yamaha P-300 turntable/TCC TC-750 phono preamp
Acurus L10 preamp
Adcom GFA-545 power amp
PolkAudio SDA 2A's/PolkAudio Monitor 7A's
Audioquest Type 4 speaker cables
Audioquest Sidewinder IC's
Audioquest Black Mamba IC's
Signal Cable Analog II IC's
Ummmm.....10" is 10".
'Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."
Well, I realize that. I guess I should have worded that differently.
Will the bolt patterns match up the same etc...?
The MW's and the PR's on my 7A's are mounted on top of the baffle, rather than being set into the baffle. Will this make any differences as far as mounting them with these rings? Would the posts for the screws need to be a little longer or anything like that?
I'm assuming that they'll work just fine though.
While we're on the topic...
I've seen a few people mention here that they drilled out the rest of the holes for their 10" PR's. The PR's on my 7A's use only 4 of the screw holes. Would you recommend drilling them out and using all 8 holes? I've never had any issues with air tightness or anything like that with my 7's. Will using all 8 screws couple the drivers to the baffle more efficiently? It'd be an easy enough tweak to do...so I'll probably go ahead and do it, unless anyone advises otherwise.
Larry-Any word on whether or not rings will be available for the 8" PR's? If you make 8" rings as well, you should have every vintage Polk driver covered as far as I can tell. I'd assume that the rings for the MW's would work for the 6.5" PR's on the Monitor 5Jr's as well.
So, here's my total order currently, for my SDA 2A's and my Monitor 7A's.
2A's-two midwoofers, and one 12" PR per speaker
7A's-one midwoofer and one 10" PR per speaker.
So, I'd need six midwoofer rings, two 12" PR rings and two 10" PR rings altogether.
As myself and others have already stated, take your time! This is an awesome thing that you're doing for Club Polk!! You're truly one of the members that makes this place as great as it is. Keep up the good work!
Last edited by comfortablycurt; 06-11-2010 at 02:47 AM.
The nirvana inducer-
APC H10 Power Conditioner
Denon DVD-2910 universal player
DPA The Little Bit Three DAC
Yamaha P-300 turntable/TCC TC-750 phono preamp
Acurus L10 preamp
Adcom GFA-545 power amp
PolkAudio SDA 2A's/PolkAudio Monitor 7A's
Audioquest Type 4 speaker cables
Audioquest Sidewinder IC's
Audioquest Black Mamba IC's
Signal Cable Analog II IC's
Rings will hit the laser in the morning.. Yes I am going to work just for you guys!!!!
H9 I will need some help with the M5's. I'm guessing about 8-1/4"
Thanks,
Larry.
Last edited by Toolfan66; 06-11-2010 at 03:30 PM.
Jesse For President!!!![]()
cnh for Vice President ..
Trey for Polkie of the year!!
Larry, I've got RTA11TLs, but I'll take 4 rings for my MW's, please.
Jay
I cut about 200 6.5 rings before I left work today, I will post some pics tomorrow.
Jesse For President!!!![]()
cnh for Vice President ..
Trey for Polkie of the year!!
Nice Larry!! You da man.
Larry,
I'll take 8 6.5" rings for my SRS2s, and 2 15" for the passives, please.
See what happens when i work all day, I miss the entire post! :(
Larry,
Can I be put in for the 2nd batch of rings?
I just need the (16) 6.5" for my 1.2TL's and (2) 15" PR's
Are you able to get new machine screws?
Thanks,
Sal
Polk Audio SDA SRS 1.2TL's
With new Exotic wood, Sonicaps, Mills & RDO198's - Born on 4-24-1989 and Signed by Matthew Polk!!!!
My Polk SDA SRS 1.2TL's http://www.LASAREATH.com/
It All Started here: http://tinyurl.com/lasareath2
Part Deux: http://tinyurl.com/lasareath3
Larry, I'm interested in a total of 14 mid-bass rings and 8 rings for the 10" passives.
Geoff
Wow, this is great Larry! Glad you are doing this so quickly! :) I'll be doing a upgrade to my SDA 2B's, and would love to have these before I put them back together with the mortite. You Da Man!!
Hi Larry! I'm in for 12 of the rings for my SDA 2.3's. Just say when and I'll send money.
Regards,
Carl
Larry, the work you put yourself through to help us maintain and improve our SDA's is simply amazing. You are one of many reasons this place is such a great place to be... I hereby nominate you for Polkie of the Year.
As your prize, I think Doro and company need to kick in some LSi-25's with free shipping.
HT Setup... Pioneer Elite SC-37, Polk Audio SDA-SRS 1.2TL's Restored with full mods, Polk Audio RM-7500 Surrounds, Oppo BDP 93
Two Channel... Carver Statement 450~1 Vacuum Tube Monoblocks, Dodd Mid-line Tube Linestage with Psvane 12Ax7 tubes, Pioneer Pdd 9Mk II SACD Player, Yamaha PX-3 Turntable with Sumiko BPS EvoIII, Polk Audio SDA-SRS 1.2TLs, with full mods.
Benghazi was more than just FUBARED...
Jesse For President!!!![]()
cnh for Vice President ..
Trey for Polkie of the year!!
Beautiful rings! Can't wait to get them!
That video is great to watch. It's amazing how fast and yet so precisely it moves. Thanks Larry.
Greg
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